• Historical estimate of 728,000 tonnes of contained copper at 2.6% grade
• Exploration upside potential with wider mineralization identified
• Successful airborne survey identifies deep metal source structures

GreenX Metals Limited (ASX:GRX, LSE:GRX, GPW:GRX, Germany-FSE:A3C9JR) has presented its Quarterly Activities Report for the period during and subsequent to 30 September 2025. The key highlights include the announcement of a historical estimate of 728,000 tonnes of contained copper (1,605 Mlbs) at an average grade of 2.6% copper on part of the Tannenberg Copper Project licence area. This estimate was based on a 1935-1938 National Socialist Government drilling campaign across four zones: Ronshausen, Hönebach, Wolfsberg and Schnepfenbusch. The company has also discovered that independent company St Joe Exploration GmbH conducted limited drilling between 1980 and 1984, further validating the 1940 historical estimate. The drilling identified up to 3.45m thick mineralization straddling the Kupferschiefer and the limestone hanging wall and sandstone footwall above and below the Kupferschiefer, suggesting significant exploration upside potential. GreenX is currently relogging and resampling over 4km of archived core from 47 holes to upgrade historical data to modern standards. Additionally, the company has completed a successful 58km2 airborne magnetic and radiometric survey over the Tannenberg Project, which has provided major geological insight with the identification of deep metal source structures directly below the historic Richelsdorf copper district.